Chemical composition of the essential oil and antioxidant activity of methanolic extracts from fruits and flowers of Hypericum lydium Boiss.

Changes in quality, antioxidant compounds and DPPH radical-scavenging activity ofRosa hybridaflowers during development

“…their marked inhibitive effect on free radicals (reactive oxygen (Fu & Mao 2008;Mlcek & Rop 2011). High levels of phenolic compounds and vitamins have been reported to be associated with a more potent antioxidant effect in various flowers (Fu et al 2009;Tai et al 2011;Şerbetçi et al 2012), and the importance of antioxidant activity in flowers of genera Begonia, Tropaeolum and Rosa have been mentioned by Friedman et al (2007). Furthermore, strong scavenging activity of ROS and lipid peroxidation were observed in extracts of edible flowers (Fu et al 2009;Friedman et al 2010).…”

“…In the past few years, there has been growing interest in edible flowers as important sources of dietary antioxidants (Kaisoon et al 2011). Many studies have indicated that, when present in the diet, these natural antioxidants increase the resistance to oxidative stress and that they may have a substantial impact on human health (Fu et al 2009;Tai et al 2011;Rop et al 2012;Şerbetçi et al 2012). Rose flowers, with their multitude of colours and fragrances, are excellent candidates for commercialization as edible flowers (Friedman et al 2010).…”

Hypericum spp. volatile profiling and the potential significance in the quality control of new valuable raw material

“…M A N U S C R I P T been deeply investigated in the last years [11][12][13][14][15][16][17][18][19][20][21]. The Turkish traditional medicine focuses on Hypericum species especially for the treatments of skin damages, diarrhea and ulcers [22][23][24][25][26].…”

Chemical composition, antioxidant and antibacterial properties of Bene (Pistacia atlantica subsp. mutica) hull essential oil

“…The formation of lipid peroxidation products was assayed by measuring malondialdehyde (MDA) levels on the basis of MDA reacted with thiobarbituric acid (TBA) at 532 nm (Serbetci et al 2012). Soybean phosphatidylcholine liposomes (5 mg/mL in KH 2 PO 4 -K 2 HPO 4 buffer) was sonicated under cooling conditions to yield a milky solution.…”

“…Free radicals are known to attack polyunsaturated fatty acids of the membrane system to induce lipid peroxidation. TBARS will be over produced through increasing the free radicals; however it could be the end product of lipid peroxidation process and commonly used as a marker of oxidative stress (Serbetci et al 2012). The inhibitory effect of EO and reference antioxidants (BHT and α-tocopherol) in different concentrations on lipid peroxidation in phosphatidylcholine liposomes were evaluated by the amount of TBARS accumulated 60 min after the incubation of liposomes with Fe 3+ /ascorbate (Fig.…”